version 3:
	- Fix Makefile for Mac OS.
	- The torch wrapper now takes inputs images where the pixel values go from 0 to 1 (it used to be from 0 to 255) to harmonize with the torch image library.
	- The option -f now returns the output of layer 18 (it used to be layer 16), so that the output should have size 4096x1x1 if the input has size 3x231x231.
	- Add python wrapper
	- Add Mac OS binaries.
